University of Saskatchewan

Advec, Inc.

Veterinary Infectious Disease Organization

Ludvik Prevec

Frank L Graham

Lorne A Babiuk

Suresh K Mittal

Suresh Kumar Tikoo

Suresh Kumar Mittal

Wael M Haddara

Andrew Bett

The present invention relates novel live bovine adenovirus (BAV) expression vector systems in which part or all of one or both of the early region 1 (E1) and early region 3 (E3) genes are deleted and replaced by a foreign gene or fragment thereof and novel recombinant mammalian cell lines stably transformed with BAV E1 sequences, and therefore, express E1 gene products capable of allowing replication therein of a bovine adenovirus having an E1 deletion replaced by a heterologous nucleotide sequence encoding a foreign gene or fragment thereof and their use in production of (antigenic) polypeptides or fragments thereof for the purpose of live recombinant virus or subunit vaccine or for other therapies.

Recombinant protein production in bovine adenovirus expression vector system

The present invention provides novel recombinant mammalian cell lines expressing bovine adenovirus functions. In one embodiment, mammalian cell lines stably transformed with bovine adenovirus E1 sequences express bovine adenovirus E1 gene products and are useful for the replication of bovine adenovirus vectors having deletions and/or insertions in the E1 region. Such vector/cell line combinations are useful for synthesis of recombinant polypeptides, preparation of subunit vaccines, and in gene therapy.

Mammalian cell lines expressing bovine adenovirus functions

The invention comprises a series of adenovirus-based vectors having deletions in the E1 and/or E3 regions, and also insertions of pBR322 sequences, which can be used to deliver nucleic acid inserts into host cells, tissues or organisms that then can express the insert. The invention includes the use of the vectors in introducing genes into cells, in making vaccines and in gene therapy.

Adenovirus vectors for gene therapy

Bovine adenovirus expression vector system

The present invention provides recombinant bovine adenovirus (BAV) vectors and expression systems for introduction and expression of non-BAV sequences in mammalian cells. Methods for the preparation and use of these vectors and expression systems are also provided.

Recombinant bovine adenoviruses

Recombinant protein production in bovine adenovirus expression vector

Growing community of inventors

Burlington, Canada

Ludvik Prevec